A267817 Numbers m that are divisible by A268336(m).

1, 2, 4, 6, 8, 10, 12, 16, 18, 20, 24, 30, 32, 36, 40, 42, 48, 50, 54, 60, 64, 68, 72, 78, 80, 84, 90, 96, 100, 108, 110, 114, 120, 126, 128, 136, 144, 150, 156, 160, 162, 168, 180, 192, 200, 204, 210, 216, 220, 222, 228, 234, 240

Offset

1,2

Comments

Squarefree terms: 1, 2, 6, 10, 30, 42, 78, 110, 114, 210, 222, ...

Links

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Juri-Stepan Gerasimov, divisors (k^k mod n) of n, SeqFan list, Feb, 13, 2016

Example

10 is in this sequence because 10/A268336(10) = 10/2 = 5.

Prog

(PARI) is(n)=my(f=factor(n)[, 1], m=n); for(k=1, #f, m=lcm(m, f[k]-1)); m/=n; m && n%m==0 \\ Charles R Greathouse IV, Feb 22 2016

Crossrefs

Cf. A174824, A268336.

Sequence in context: A213708 A239063 A151999 * A177917 A071594 A306263

Adjacent sequences: A267814 A267815 A267816 * A267818 A267819 A267820

Keyword

nonn

Author

Juri-Stepan Gerasimov, Feb 13 2016

Extensions

a(16) inserted by Charles R Greathouse IV, Feb 22 2016

Status

approved